—Excuse me, could you tell me where the post office is?
—__________, but I’m a stranger here．
| A．I’m not sure | B．I’m sorry | C．That’s right | D．I’m afraid not |
Would you please keep silent? The weather report andI want to listen.
| A． | is broadcast | B． | is being broadcast |
| C． | has been broadcast | D． | had been broadcast |
The collapse of the World Trade Centre has put US economy in a difficult___________.
| A．occasion | B．case | C．situation | D．background |
More and more people choose to shop in a supermarket as it offers a great _______of goods.
| A．variety | B．mixture | C．extension | D．combination |
Life is tough in the city. In order to lose their ，some people drink alcohol.
| A．temper | B．mood | C．consciousness | D．pressures |
One of the consequences of our planet's being warming up is a（n）_______ in the number of natural disasters.
| A．result | B．account | C．reason | D．increase |